JPH037681A - Gate door fixing device for cargo box of vehicle - Google Patents

Abstract

PURPOSE:To eliminate works to accommodate a stationary column and enhance the working effectiveness by furnishing a detent capable of rising and falling at each lateral gate door, sinking this detent, thereby allowing a detaining part to come in contact with the contact part on the floor plate side in the direction of restricting the outward revolution, and thereby fixing the lateral gate door. CONSTITUTION:When cargo such as gravel is loaded into a cargo box, a detent 19 is sunk by turning a lever 18 until the tip comes in contact and is detained with the contact part of a supporting part 23, and thus a gate door 6 is held upright. When cargo such as pallets and sacks is loaded or unloaded, a rotary arm 12 is turned to disengage the detained upper shaft 9 of a rear gate door 8, which is thus turned downward. Then the front tying device for the lateral gate door 6 is released, and the detent 19 is raised by turning the lever 18 and moved apart from the supporting part 23 on the floor plate 3 side, and the lateral gate door 6 is turned downward round a fulcrum X to achieve wide opening over the floor plate 3. This eliminates accommodating works for a stationary column as in a conventional arrangement, to lead to enhancement of the working effectiveness.

Description

[Detailed Description of the Invention] tal Industrial Field of Application The present invention is used in the field of cargo boxes such as freight cars and dump trucks that can be loaded and unloaded from any position by opening the rear or side sliding doors. It is something that will be done.

(bl Conventional technology) In general, a vehicle's cargo box has fixed pillars erected at the four corners of the floorboard, Wit walls are fixed between each fixed pillar, and the rotatable side and rear sliding doors are secured. Loading and unloading work can be carried out from the rear and sides at will. However, even if the sliding door is opened, the fixed pillars remain in the upright position, which may obstruct loading and unloading work. There were problems such as the forklift being hit by a forklift's claw and being damaged.

Therefore, conventionally, as disclosed in Japanese Patent Application Laid-Open No. 54-67916, a lashing device is provided on the fixed column, and when loading and unloading work is not performed, the fixed column is erected and fixed using the lashing device. When carrying out loading and unloading work, the lashing device is removed and the fixed pillar is retracted.

Problem to be Solved by the FC1 Invention However, in the above structure, when carrying out loading and unloading work, it is necessary to perform an operation of retracting the fixed pillar after opening the side sliding door. It has the drawbacks of being time-consuming to prepare and requiring a large number of parts. 1.1 Therefore, the object of the present invention is to provide a sliding door fixing device that eliminates the need for a fixing column and allows the floorboard to be opened wide simply by rotating the sliding door, thereby facilitating loading and unloading work.

fd) Means for Solving the Problems The present invention provides a cargo box for a vehicle in which a side sliding door and a rear sliding door are rotatably provided on a floorboard, and a part of the side sliding door is provided by lever operation. A locking member that can be raised and lowered in a protruding manner is provided below the side sliding door, and a contact portion that comes into contact with the locking member in the outward rotation restriction direction is provided on the side surface of the floorboard at a position where the locking member moves up and down. It is characterized by the formation of

When loading and unloading work, operate the lever to raise the locking member, release the locking member from the contact part on the floorboard side,
In this state, the side fan door is rotated to open the side of the floorboard and the loading and unloading work is performed.

After the loading and unloading work is completed, rotate the side fan door so that it is in the upright position, and then lower the locking member with a single lever operation so that it can come into contact with the abutting part of the locking member. Or bring them into contact. In this way, even if an external force from an object acts in the direction of opening the side sliding door, the locking member comes into contact with the abutting portion and restricts the rotation of the side sliding door.

if) Example The following examples will be explained with reference to the drawings. (1) is a cargo box used for a dump truck, and the hinge (2) provided at the rear lower part of the cargo box f1) is connected to the vehicle body (not shown). ), Il
The cargo box fl) can be dumped rearward by an arbitrary plowing device provided between the cargo box fl and the cargo box f1.

To explain the cargo box i11 with reference to FIG. 1, the floor plate (3)
Fixed pillars +4+ +4) are erected on the front left and right sides of the front wall (5), and a front wall (5) is erected and fixed between the fixed pillars +41 +41.

Side fan doors (61+61) are erected on both sides of the floorboard (3) at positions that protrude from the side edges, and the lower part of the side fan doors (6) +6+ are installed in the space below the side fan doors F61 F61. Floorboard (3
) It is pivoted on the side and can be rotated around its pivot point It has become.

A rear fan door (8) is erected behind the floorboard (3), and an upper shaft f91 +9 is installed on both sides of the upper part of the rear fan door (8).
+ is provided, and this shaft +91 +91 is connected to the side fan door (6
Notch (
Ill (11), as well as the support column (101f
The rotating arm f12+ +121 provided on the lol is engaged with the shaft +91 +91 to support the upper part of the rear fan door (8). Further, a lower shaft (13) is provided below the rear fan door (8), and the shaft (13) is secured with a hook (14) provided on the floorboard (3) side. The hook (14) is driven by an automatic opening/closing mechanism (a mechanism that operates the hook in the direction of releasing the lashing when the cargo box reaches a predetermined tilt angle or more). (15) 1151 is rotating arm +121 +
There are 12 handles.

ft61 (161 is a swing door fixing device provided at the rear of the cargo box il+, and left and right swing door fixing devices (16) (161 have the same structure, so one side will be explained with reference to FIGS. 2 to 5.

(17) is a reinforcing part provided at the rear of the side sliding door (6), and a lever (18) and a locking member (19) are provided in the space formed by this reinforcing part (17). The lever (1
8) Is one end ii? +Disc spring (20) on the reinforcement part (17)
), and the other end protrudes from the opening (21) on the front surface of the reinforcing part (17).

The locking member (19) has a wide lower part in the shape of a shamoji, and the upper part is pivotally supported by a part of the lever (18).
By the operation 8), the 1F member (19) can be raised or lowered to a position above or below the pivot point X. (
22) (22) is a bracket that guides the locking member (19) and reinforces the reinforcing portion (17).

A hanging support member (23) is fixed to the floorboard (3) by engaging with the locking member (19) in a space located below the side sliding door (6) and to the side of the floorboard (3). ing.

As shown in FIG. 5, the support member (23) is provided with an upper contact member (25) and a lower contact member (26) above and below a box-shaped mounting member (24), and each member (24) +251
(26) is welded to the side surface of the floorboard (3). The upper abutting member (25) is located above the pivot point X, has an upper hole (27) into which the locking member (19) is inserted, and serves as an abutting part. There is. The lower abutting member (26) is located below the pivot point X, and has a lower hole (28) into which the locking member (19) is inserted and functions as an abutting portion. .

(29) is a reinforcement girder for lateral reinforcement of floors FFi, f3+.

Fig. 6 shows another embodiment in which the lower side of the floor plate (3), that is, the lower part of the shaft fulcrum The ampullae (32
), a tapered part (33) is formed on the opposite side, and by lowering and lowering the locking member (31), the tapered part (33) passes through the pivot point X from the - dotted chain line position, and the tapered part (33) (3)l
By coming into contact with the pressing member (34) extending from IllI, the enlarged portion (32) comes into contact with the contact portion (30) and supports the side sliding door (6).

FIG. 7 is another embodiment, in which the lower abutting member is removed from the embodiment of FIG. 5, and the upper mounting member (25) is connected to the locking member (
19), even if the side fan door (6) tries to rotate, the locking member (19) is restricted from rotating by the upper mounting member (25), and the side fan door (6) is in the upright state. is retained.

In addition, in the example, the explanation was made using the packing box of Gunbu truck,
A cargo box for a freight car also has similar effects.

Next, the operation of the present invention will be explained using the above-described structure. When loading and unloading cargo such as earth and sand, the cargo is loaded into a cargo box from above using a backhoe or the like in the state shown in FIG. When the cargo is loaded, an external force acts on the side sliding door (6) f6+ and attempts to rotate the side sliding door f61 +61 outward, but the locking member (19) (19) descends and the fifth Since it is in the solid line position in the figure, the inside of the locking member (19) (left side in Figure 5) contacts the lower abutting member (26), and the locking member (1
Since the outside (right side in FIG. 5) of 9) abuts against the upper abutting member (25), the side fan door (6) can be maintained in an upright position against the external force. In addition, each contact member +251
(251 also plays a supporting role against external forces acting on the side sliding door (6) from the outside.

When unloading the cargo, move the cargo box (1) around the hinge (2).
Tilt 1 backward. When a predetermined tilting angle is reached, the binding of the lower shaft (13) is released and the rear fan door (8) becomes able to rotate upward, and when the cargo box (11) is further tilted, the cargo is discharged from the rear. It turns out.

Next, when loading and unloading cargo such as pallets and bags, operate the rotating arm (12) from the state shown in Figure 1 and secure the two-part shaft (9) of the rear sliding door (8). Release the button and rotate the rear fan door (8) downward. After that, the side fan door (6
) Release the front lashing device (7) and then release the lever (18).
is rotated from the solid line position in FIG. 2 to the dashed-dotted line position and the locking member (19) is raised to release the engagement state with the floorboard (3) side. In this state, the side sliding door (6) is rotated downward about the pivot point X, and the cargo is loaded and unloaded in a state where there are no protrusions on the floorboard (3).

After the loading and unloading work is completed, rotate the side door (6) upward and return it to its original position, secure it with the lashing device (7), and close the lever (1).
8), the locking member (19) is lowered from the dotted chain line position in FIG. 5 to the solid line position and engaged with the support member (23).

Thereafter, the rear fan door (8) is rotated upward and returned to its original position, and the upper shaft (9) is secured by the rotating arm (12), thereby fixing the rear fan door (8).

fgl Effects of the Invention As described above, the present invention provides a locking member that can be raised and lowered on the side fan door, forms an abutment part on the floorboard 2 side, and when the locking member descends, the locking member comes into contact with the locking member. Since the side sliding door can be fixed by making contact with the outside rotation restriction direction, there is no need to retract the fixing pillar during loading and unloading work as in the past, significantly increasing work efficiency. I can do it.

In addition, the number of parts is small, so it can be manufactured at low cost.

[Brief explanation of drawings]

Figure 1 is an overall view, Figure 2 is an enlarged partial cross-sectional view, Figure 3 is a sectional view taken along line A-A in Figure 2, Figure 4 is a cross-sectional view taken along Figure 2 B-B, and Figure 5 is a cross-sectional view of Figure 2. Figure 2 C-C cross-sectional enlarged view, Figures 6 and 7
The figure shows another embodiment. (1) is the packing box, (3) is the floorboard, (6) is the side sliding door, (8
)' is the rear sliding door, (16) is the sliding door fixing device, (18) is the lever, (19) is the locking member, (23) is the support 1

Claims (1)

[Claims] In a vehicle cargo box in which a side sliding door and a rear sliding door are rotatably provided on the floorboard, a portion of the side sliding door can be raised and lowered in a downwardly projecting manner by operating a lever. A locking member is provided,
On the other hand, on the side of the floorboard, at a position where the locking member moves up and down,
A sliding door fixing device for a vehicle cargo box, comprising a locking member and a contact portion that contacts in an outward rotation restriction direction.